What do TEU and FEU mean? A: TEU= Forty-foot equivalent unit; FEU= Twenty-foot equivalent unit B: TEU= Twenty-foot equivalent unit; FEU= Forty-foot equivalent unit C: TEU= Fourteen-foot equivalent unit; FEU= Twelve-foot equivalent unit D: TEU= Twelve-foot equivalent unit; FEU= Fourteen-foot equivalent unit
What do TEU and FEU mean? A: TEU= Forty-foot equivalent unit; FEU= Twenty-foot equivalent unit B: TEU= Twenty-foot equivalent unit; FEU= Forty-foot equivalent unit C: TEU= Fourteen-foot equivalent unit; FEU= Twelve-foot equivalent unit D: TEU= Twelve-foot equivalent unit; FEU= Fourteen-foot equivalent unit
下列碳正离子的稳定性顺序是:( ) A: (1) > (2) > (3) > (4) B: (2) > (4) > (3) > (1) C: (1) > (3) > (2) > (4) D: (2) > (4) > (1) > (3)
下列碳正离子的稳定性顺序是:( ) A: (1) > (2) > (3) > (4) B: (2) > (4) > (3) > (1) C: (1) > (3) > (2) > (4) D: (2) > (4) > (1) > (3)
>>>x = [1, 2, 1, 1, 2]>>>x.remove(2)语句运行结果正确的是( )。 A: [1, 1, 1, 2] B: [1, 2, 1, 2] C: [1, 2, 1, 1] D: [1, 1, 1]
>>>x = [1, 2, 1, 1, 2]>>>x.remove(2)语句运行结果正确的是( )。 A: [1, 1, 1, 2] B: [1, 2, 1, 2] C: [1, 2, 1, 1] D: [1, 1, 1]
下面化合物的熔点高低次序是:( ) A: (1)>(3)>(2) B: (3)>(2)>(1) C: (1)>(2)>(3) D: (3)>(1)>(2)
下面化合物的熔点高低次序是:( ) A: (1)>(3)>(2) B: (3)>(2)>(1) C: (1)>(2)>(3) D: (3)>(1)>(2)
将下列化合物按极性大小排列顺序:(1)CH4 (2)CH3F (3)CH3Cl (4 )CH3Br (5)CH3I A: (1)>(2)>(3)>(4)>(5) B: (5)>(4)>(3)>(2)>(1) C: (2)>(3)>(4)>(5)>(1) D: (3)>(4)>(5)>(1)>(2)
将下列化合物按极性大小排列顺序:(1)CH4 (2)CH3F (3)CH3Cl (4 )CH3Br (5)CH3I A: (1)>(2)>(3)>(4)>(5) B: (5)>(4)>(3)>(2)>(1) C: (2)>(3)>(4)>(5)>(1) D: (3)>(4)>(5)>(1)>(2)
比较下列化合物的碱性强弱(1)脲(2)乙酰胺(3)乙胺(4)丙二酰脲 A: (1)>(2)>(3)>(4) B: (2)>(4)>(3)>(1) C: (3)>(1)>(2)>(4) D: (4)>(2)>(3)>(1)
比较下列化合物的碱性强弱(1)脲(2)乙酰胺(3)乙胺(4)丙二酰脲 A: (1)>(2)>(3)>(4) B: (2)>(4)>(3)>(1) C: (3)>(1)>(2)>(4) D: (4)>(2)>(3)>(1)
下列物质(1) CaO;(2) MgO;(3) NH3;(4) PH3熔点由高到低的顺序为:( ) A: (1) > (2) > (3) > (4) B: (1) > (2 ) > (4 ) > (3) C: (2) > (1) > (4) > (3) D: (2 ) > (1) > (3 ) > (4 )
下列物质(1) CaO;(2) MgO;(3) NH3;(4) PH3熔点由高到低的顺序为:( ) A: (1) > (2) > (3) > (4) B: (1) > (2 ) > (4 ) > (3) C: (2) > (1) > (4) > (3) D: (2 ) > (1) > (3 ) > (4 )
化合物(1)苯、(2)呋喃、(3)吡咯、(4)噻吩分别发生亲电取代反应的活性次序是() A: (1)>(2)>(3)>(4) B: (2)>(1)>(3)>(4) C: (3)>(2)>(4)>(1) D: (4)>(3)>(2)>(1)
化合物(1)苯、(2)呋喃、(3)吡咯、(4)噻吩分别发生亲电取代反应的活性次序是() A: (1)>(2)>(3)>(4) B: (2)>(1)>(3)>(4) C: (3)>(2)>(4)>(1) D: (4)>(3)>(2)>(1)
7. 假设$a=range(1,20,5),则print_r($a)的输出结果为( )。 A: A、Array ( [0] => 1 [1] => 6 [2] => 11 [3] => 16 ) B: B、Array ( [0] => 1 [1] => 20[2] => 5 ) C: C、Array ( [0] => 5 [1] => 10 [2] => 15 [3] => 20 ) D: D、Array ( [0] => 5 [1] => 10 [2] => 15 )
7. 假设$a=range(1,20,5),则print_r($a)的输出结果为( )。 A: A、Array ( [0] => 1 [1] => 6 [2] => 11 [3] => 16 ) B: B、Array ( [0] => 1 [1] => 20[2] => 5 ) C: C、Array ( [0] => 5 [1] => 10 [2] => 15 [3] => 20 ) D: D、Array ( [0] => 5 [1] => 10 [2] => 15 )
化合物(1)正丙基氯、(2)乙醚、(3)正丁醇、(4)仲丁醇的沸点由高到低的顺序为() A: (1)>(2)>(3)>(4) B: (3)>(4)>(1)>(2) C: (2)>(3)>(1)>(4) D: (2)>(4)>(1)>(3)
化合物(1)正丙基氯、(2)乙醚、(3)正丁醇、(4)仲丁醇的沸点由高到低的顺序为() A: (1)>(2)>(3)>(4) B: (3)>(4)>(1)>(2) C: (2)>(3)>(1)>(4) D: (2)>(4)>(1)>(3)